/*
   Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

#ifndef _EVENT_PARSE_DATA_H_
#define _EVENT_PARSE_DATA_H_

#include "sql_alloc.h"

class Item;
class THD;
class sp_name;

#define EVEX_GET_FIELD_FAILED   -2
#define EVEX_BAD_PARAMS         -5
#define EVEX_MICROSECOND_UNSUP  -6
#define EVEX_MAX_INTERVAL_VALUE 1000000000L

class Event_parse_data : public Sql_alloc
{
public:
    /*
      ENABLED = feature can function normally (is turned on)
      SLAVESIDE_DISABLED = feature is turned off on slave
      DISABLED = feature is turned off
    */
    enum enum_status
    {
        ENABLED = 1,
        DISABLED,
        SLAVESIDE_DISABLED
    };

    enum enum_on_completion
    {
        /*
          On CREATE EVENT, DROP is the DEFAULT as per the docs.
          On ALTER  EVENT, "no change" is the DEFAULT.
        */
        ON_COMPLETION_DEFAULT = 0,
        ON_COMPLETION_DROP,
        ON_COMPLETION_PRESERVE
    };

    int on_completion;
    int status;
    bool status_changed;
    longlong originator;
    /*
      do_not_create will be set if STARTS time is in the past and
      on_completion == ON_COMPLETION_DROP.
    */
    bool do_not_create;

    bool body_changed;

    LEX_STRING dbname;
    LEX_STRING name;
    LEX_STRING definer;// combination of user and host
    LEX_STRING comment;

    Item *item_starts;
    Item *item_ends;
    Item *item_execute_at;

    my_time_t starts;
    my_time_t ends;
    my_time_t execute_at;
    my_bool starts_null;
    my_bool ends_null;
    my_bool execute_at_null;

    sp_name *identifier;
    Item *item_expression;
    longlong expression;
    interval_type interval;

    static Event_parse_data *
    new_instance(THD *thd);

    bool
    check_parse_data(THD *thd);

    bool
    check_dates(THD *thd, int previous_on_completion);

private:

    void
    init_definer(THD *thd);

    void
    init_name(THD *thd, sp_name *spn);

    int
    init_execute_at(THD *thd);

    int
    init_interval(THD *thd);

    int
    init_starts(THD *thd);

    int
    init_ends(THD *thd);

    Event_parse_data();
    ~Event_parse_data();

    void
    report_bad_value(const char *item_name, Item *bad_item);

    void
    check_if_in_the_past(THD *thd, my_time_t ltime_utc);

    Event_parse_data(const Event_parse_data &);	/* Prevent use of these */
    void check_originator_id(THD *thd);
    void operator=(Event_parse_data &);
};
#endif
